Centrifugal slime-separator.



J. T. LINDAHL.

GENTRIFUGAL SLIME SEPARATOR.

APPLIUATION FILED OUT. 15, 1909.

954,528 Patented Apr. 12, 1910.

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UNITE STATE ATEN FFI.

JOHN TIEODOR LINDAHL, 0F STOCKHOLM, SWEDEN, ASSIGNOR OF ONE-HALF TO GGTEBORGS NYA VERKSTADSAKTIEBOLAG, 0F GOTTENBORG, SWEDEN.

CENTRIFUGAL SLIME-SEPARATOR.

Specification of Letters Patent.

Patented Apr. 12, 1910.

Application filed October 15, 1909. Serial No. 522,79

To all whom it may concern:

Be it known that I, JOHN TEODOR LIN- DAI-IL, a subject of the King of Sweden, residing at Stockholm, in the Kingdom of Sweden, have invented new and useful Improvements in Centrifugal Slime-Separators, of which the following is a specification, reference being had to the drawing accompanying and forming a part hereof.

This invention relates to improvements in centrifugal slime separators, such as machines for separating utricles of yeast from the water with which they are mixed, or kaolin (porcelain clay) from the water in which it has been washed, or for separating color-dust, starch or other small solid particles suspended in liquids.

For pressing out the slime from the cen trifugal drum of a slime separator I have formerly used rotary disks rolling along the row of outlet openings for the slime. By such an arrangement the slime is not reliably forced out since the slime sometimes has occasion to glide ahead of the disk without entering the outlet passages.

The object of this invention is to provide more reliable means for pressing out the slime.

The invention consists, chiefly, in the combination with the drum, of one or more plungers revoluble with the same and adapted to move into and out of one or more pockets communicating with the ontlets and adapted to receive the slime. and

' means for reciprocating the said plungers in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the said slime outlets.

The invention further comprises the construction and combination of parts hereinafter more particularly described.

In the drawing, Figure 1 is a vertical section (on line CD of Fig. 2) of the lower part of a slime separator embodying the invention. Fig. 2 is a horizontal section of the same apparatus (on line AB of Fig. 1).

Referring to the drawing, a and Z; are two reciprocating double plungers partaking in the revolution of the drum and serving as pressing members for pressing out the slime, one double plunger lying across the other. The reciprocating movement is transmitted from an axle 03 mounted within and projecting above the hollow axle or spindle c of the drum in such a manner as to be able to turn therein. Attached to the axle (Z is an eccentric c mounted in level with and operating the plungers a and Z). The eccentric e is surrounded by balls or rollers 7 held in position by a ring 9 movable in longitudinal openings 72. and i of the plungers a and b, as clearly shown in Fig. 2. It will thus be seen that the plungers a and b are reciprocated when the axle (Z rotates relatively to the spindle c. The outer ends of the reciprocating plungers preferably form areshaped pressing surfaces 70 entering into the press chambers or cells Z, which are suitably formed by the bottom at of the centrifugal drum, a ring n placed at a distance from the said bottom, and triangular parts 0 placed between the bottom and the ring, said parts being eventually made integral with the said bottom, or the ring, respectively. As shown in Fig. 2, the triangular parts form the side walls of the press chambers or cells while the aforesaid bottom and ring form the upper and the lower side thereof. The movement of the plungers a and Z) is such that the pressing parts is in moving in wardly, 2'. 6. toward the axis of the drum, move entirely out of the cells, leaving an opening at the top thereof, as shown at the right-hand sideof Fig. 1, so that the slime has occasion to enter into the cells in front of the press plunger 70 which thereupon presses the slime out of the cells, when moving back into the same. Both ends of the plungers a and 6 work in the same manner. It will be seen from Fig. 2 that the pressing out 'of the slime takes place successively around about the inner side of the drum. For balancing the plungers a and b the axle cl has attached to it a counterweight g. In other respects the centrifugal drum is constructed in well known manner. The liquid with the slime suspended therein is supplied through the central tube 1" onto the disk .9 and passes between the latter and the lower edge of the widened part of the tube into the liner. In order to prevent the liquid from being pressed directly outward so as to prevent the slime from entering into the press chambers or cells Z, the outer edge of the disk 8 is curved upward. The plungers a and I) may suitably be provided with holes a near the circumference thereof so as to allow the pressure on the upper sides of the plungers to be propagated to the lower sides thereof, by which the plungers will be balanced in the axial direction of the drum, so that the friction will be reduced to a minimum and an easy movement of the plungers be obtained.

In conclusion I wish to point out that I do not restrict myself to the precise details of construction and arrangement hereinbefore described. If desired, more than two pressing plungers may be used. In certain cases one disk may suffice. The form of the plungers or pressing members may be varied considerably and in many particulars with-. out departure from the principle of my invention.

I claim:

1. In a centrifugal slime separator, the combination of a rotary drum having at the circumference slime pockets communieating with outlets for the slime, plungers revoluble with the drum and adapted to move into and out from the said pockets, and means for reciprocating the said plungers in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the outlets.

2. In a centrifugal slime separator, the combination of a rotary drum having at the circumference slime pockets communicating with outlets for the slime, plungers revoluble with the drum and adapted to move radially into and out from the said pockets, and means for reciprocating the said plun gers in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the outlets.

3. In a centrifugal slime separator, the combination of a rotary drum having at the circumference slime pockets communicating with outlets for the slime, two double plungers partaking in the revolution of the drum and adapted to move with their ends into and out from the said pockets, one double plunger lying across the other, and means for reciprocating the said plungers in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the outlets.

4. In a centrifugal slime separator, the combination of a rotary drum having slime outlets at its bottom, a ring placed within the said drum at a distance from the said bottom, partition walls placed in the space below the said ring, so as to form a number of pockets communicating with the slime outlets, plungers partaking in the revolution of the drum and adapted to move with their ends into and out from the said pockets, and means for reciprocating the said plungers in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the outlets.

5. In a centrifugal slime separator, the combination of a rotary drum having slime outlets at its bottom, a ring placed within the said drum at a distance from the said bottom, partition walls placed in the space below the said ring, so as to form a number of pockets communicating with the slime outlets, plungers partaking in the revolution of the drum and adapted to move with their ends into and out from the said pockets, and means for reciprocating the said plungers radially in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the outlets.

6. In a centrifugal slime separator, the combination of a rotary drum having slime outlets at its bottom, a ring placed within the said drum at a distance from the said bottom, triangular parts placed between the bottom and the ring so as to form a number of pockets communicating with the slime outlets, plungers partaking in the revolution and adapted to move with their ends into and out from the said pockets, and means for reciprocating the said plungers in such a manner as to allow the slime to enter into the said pockets in front of the plungers and to be pressed by the same into the outlets.

JOHN TEODOR LINDAHL.

Vitnesses AUG. SoRnNsEN, KARL RUNCSKOG. 

